S00-024: Verify restored pinned Linux XMPP environment access

Changes: Add the S00-024 continuation checkpoint, refresh verified runtime/cache paths, and replace the blocked handoff with QA and S00-020 restart instructions.
Validation: Existing verify.py passed official HTTPS/checksum retrieval, Node 24.21.0/npm 11.19.0, fresh-cache locked npm ci and Stanza import. Independent archive/input/version/config assertions, tasks.py validate and diff/scope/whitespace checks passed. Browser/WSS and product readiness remain unverified.

Task: S00-024
Agent: auto-ci-cd-49907d48a6d1
Role: ci-cd
Action: claim
Status: review

Task title: Устранить прерывание: Restore access to the pinned Linux XMPP experiment toolchain

experiments/0002-xmpp-library/environment-access/README.md

@@ -43,3 +43,19 @@ package provenance/advisory audit, browser/WSS authentication, application build
 or interoperability claim is made. This outcome is submitted for independent
 QA review only. S00-020, S00-024 and S00-003 remain unfinished; this executor
 does not continue their work or change their statuses directly.
+
+## S00-024 continuation checkpoint
+
+On 2026-10-15 executor auto-ci-cd-49907d48a6d1 repeated the existing probe
+successfully after independent S00-026 acceptance. The interrupted environment
+restoration can now be reviewed: official HTTPS checksum/archive retrieval,
+Node v24.21.0/npm 11.19.0 execution, fresh-cache installation of eight unchanged
+parent locked packages and actual Stanza 12.22.1 import all passed. result.json
+contains this session's temporary paths. No probe implementation change was
+needed; S00-026 supplied the missing access and verification artifacts.
+
+After independent S00-024 review, a fresh S00-020 executor should rerun the
+command above, verify result.json and use its runtime_bin with an isolated cache
+within its own card. Host Node/npm are not the pinned runtime. Temporary paths
+can expire. This checkpoint does not install dependencies into the parent
+experiment or complete S00-020/S00-003; their own acceptance remains required.